WO2009083013A1

WO2009083013A1 - Filling system

Info

Publication number: WO2009083013A1
Application number: PCT/EP2007/011370
Authority: WO
Inventors: Westhues Rainer; Stövesand BERNHARD; Hoffmann Mirko
Original assignee: Haver & Boecker Ohg
Priority date: 2007-12-21
Filing date: 2007-12-21
Publication date: 2009-07-09
Also published as: EP2238034A1; EA201001158A1; CN101932510A

Abstract

The invention relates to a filling system (1) having a filling machine (2) and a separate sack removal device (3), wherein the filling machine (2) is disposed rotatably about a central rotary axis (11) as a rotating filling machine, and is equipped with a plurality of filling tube (12) for filling sacks (13), particularly for filling valve sacks. The sack removal device (3) for removing the filled sacks (13) comprises a support device (10) performing a back-and-forth motion for removing a sack, wherein the forward motion comprises a motion coordinated in a circumferential direction and in a radial direction, in order to remove a filled sack (13) from a filling tube by means of the support device (10) during the forward motion from a rest position to a removal position.

Description

filling station

The invention relates to a filling system with a rotating filling machine with a plurality of filling tubes and with a bag removal device, wherein the filling machine is intended for filling bags, in particular with bulk goods. Furthermore, the invention relates to a bag removal device for filling machines.

Filling systems with rotating filling machines have become known in the prior art, in which filling pots distributed over the circumference are provided, each with associated filling pipe. After attaching a bag to a filling tube of the flow channel of the filling tube is controlled by a slider released or closed. During the filling process, the bag is held on the filling tube and supported by a blind chair associated with the filling tube from below, and the weight of the bag chair with the bag located thereon is continuously determined and deduced therefrom on the filling state of the bag. After reaching the desired filling weight of the bag is dropped over a movement of the co-rotating bag chair. In this system, a bag chair is required for each filling tube, which in addition to the support function of the bag during filling also causes the dropping of the bag after completion of the filling process. Therefore, such systems are relatively expensive.

With the US 3,933,185 a filling plant has become known, in which a rotary filling machine is provided with a plurality of filler neck. A likewise rotating Sackabnahmekarussell is arranged laterally next to the filling machine and has symmetrically distributed over the circumference four Sackabnahmegestelle, the take over the filled bags from the filling machine during rotation of the bag take-off carousel. Controlled by a control pin tilt the Sackabnahmegestelle the bags on a discharge belt. A disadvantage of this known system is the additional space required for the Sackabnahmekarussell. Furthermore, the Sackabnahmekarussell with the four Sackabnahmegestellen is mechanically complex.

WO 2006/002876 A2 has disclosed a filling installation in which a rotating filling machine with a plurality of filling nozzles and a separate bag discharge is provided. The Sackabwurf is chair-like design and is tilted to eject the bags around a horizontal axis, so that the Sackstuhl departs the bag with the chair back of the filling tube. Such a system has the advantage that only one bag discharge device is required for several filling tubes. Since the Sackabwurfeinrichtung tilts forward about a horizontal axis, the chair-like Sackabwurf must be located directly below the rotating bags. It has been found that e.g. in the case of inaccurate manufacture of the sack lengths, the sacks to be filled hang at different distances from the filling tubes, so that during the rotation of the filling machine it may happen that the sacks abut against the sack-shedding device.

Both in the known filling systems, each with a separate bag chair per filling tube as well as in the filling with a bag chair for all filling tubes according to WO 2006/002876 A2 or with a Sackabnahmekarussell the strength of the bags used is an important factor, since the cost of the bag contribute significantly to the operating costs of a filling plant. In the known systems described above, the bag is in each case deported from the filler neck and thrown out of the rotating motion out on the discharge conveyor. The sack is subjected to considerable loads which, in the case of sacks that are too thin, or wet seams can lead to bursting of the bag, so that a gentle removal of the bag from the filling tube is an advantage that can not be guaranteed with the known systems.

It is therefore an object of the present invention to provide another Sackabwurfeinrichtung for a filling available, in which a reliable removal of the bags from the filling tubes in a small footprint is possible.

In preferred developments, it is an aspect of the object, the filling system or the Sackabwurfeinrichtung form such that a gentler treatment of the bags is carried out during the decrease in order to avoid the bursting of bags when dropped or at least reduce.

This object is achieved with a filling system having the features of claim 1 and by a bag removal device for a filling machine with the features of claim 18. Preferred embodiments are the subject of the respective subclaims.

The filling system according to the invention comprises a filling machine and a separate bag removal device. In this case, the filling machine is arranged as a rotating filling machine rotatable about a central axis of rotation and is equipped with a plurality of filling tubes for filling sacks. In particular, the filling system according to the invention is used for filling valve bags with pourable goods. The bag take-off device is used to remove the filled bags and comprises a support device which performs a reciprocating movement for removing a bag, wherein at least the forward movement comprises a circumferentially and in the radial direction coordinated movement or a movement in the circumferential direction and in the radial direction, by means of the support device in the forward movement of a rest position in at least one Removal position to remove a filled bag from a filling tube.

The invention has many advantages. The invention provides in a simple way a filling system with a separate bag removal device available, in which by a particular directional movement a bag is removed from a filling tube. The directed movement may e.g. be a linear motion transmitted via e.g. a linear slide takes place.

The invention works reliably and takes up little space. It is even possible to arrange the bag removal device partially or almost completely below the rotating filling machine, so that almost no additional space is needed. A significant advantage is that integration into existing systems is possible without requiring a lot of space.

The rest position is preferably a first end position. The acceptance position may be an end position, but may also be a center position that is reached before the second end position.

In a preferred refinement, the support device of the bag removal device provided for removing the filled sacks is provided on a swivel arm. In this case, the swivel arm is arranged pivotable about a pivot axis in order to effect the reciprocating movement of the support device during the pivoting movement. The pivot axis may be arranged substantially vertically and preferably performs an outwardly directed movement during removal. Preferably, the pivot axis is arranged at a distance from the central axis of rotation of the filling machine. A significant advantage of such embodiments is that the bag is removed from a filling tube in a simple and reliable manner by the rotational movement about a substantially vertical axis, for example.

Preferably, the support means is in the rest position at least partially radially offset from the filling tubes. The support means is preferably arranged in the rest position in a plane below the removal position. Preferably, the support means is in the rest position at least partially radially within a rotational path of the valve sacks to be filled. This allows a particularly space-saving design.

Another advantage over the cited prior art is that when pivoting about a substantially vertical axis, the bag removal device does not have to be below the rotational path of the bags rotating with the filling machine, so that a free vertical distance can be made larger, even at Fluctuations in bag length or under different boundary conditions to ensure sufficient space below the bags hanging on the filling tubes.

The angle of the pivoting movement depends on the design of the packing machine. In a packaging machine with 8 filling nozzles, the pivoting angle between the rest position and the removal position can e.g. 20-25 °. The movements of the filling machine and the separate bag removal device are coordinated and have in the circumferential direction of the packer at the decrease at least about the same peripheral speed.

Preferably, the bag removal device is arranged in particular substantially pivotable in the horizontal plane. Advantageously, the support means is adapted to assist the filled bag in the directed outward movement and in particular the pivoting movement for the removal of the bag from below until the bag is dropped. As a result, a defined decrease behavior is realized. Preferably, in the directional movement or pivoting movement of the bag is first supported, then slightly raised, turned out or over and ultimately dropped.

By a reciprocating pivotal movement to decrease the bag a particularly gentle handling of the filled bags is achieved because the bag from the rotating movement of the filling is taken up with a pivoting movement and transferred in the direction of the discharge belt, so that the Austrags- band Passed filled bag is exposed to significantly lower loads than in the prior art.

This leads to the use of cheaper sacks is possible in filling system according to the invention, since the bag is no longer exposed to such loads when dropped. At a fill rate of e.g. 2400 bags per hour and a little more than 20 hours of operation per day results in a bag consumption of about 50,000 bags per filling machine and day, so that even small savings on the bag material lead to significant savings in consumables.

By means of the pivoting movement, the bag removal device according to the invention initially absorbs the rotating movement of the filling system, supports the bag and transfers it in the direction of the discharge belt, so that the bag is dropped exactly positioned on the discharge belt. In contrast to the prior art, the bag does not meet against a baffle on the discharge belt, where it is exposed to large pressure surges. There is a gentler treatment. The support means may also be referred to as the saddle of the bag take-off device.

The support device, which is movable between a rest position and a removal position and in particular can be pivoted, preferably has a sufficient distance from the rotating sacks in the rest position. During the directed forward movement by the pivoting movement from the rest position into the removal position, at least a part of the support device is preferably raised. The lifting of the support means is carried out continuously in particular over at least a portion of the directed movement.

In preferred developments of the invention, the pivot axis is arranged substantially parallel to the central axis of rotation. However, the pivot axis can also be arranged slightly obliquely in space, in particular in such a way that during the pivoting of the pivot arm, a corresponding height adjustment of the support device takes place, so that with the pivoting movement, the support device initially supported the bag to be accepted, then lifts and translates and finally throws.

Advantageously, the support means is disposed at one end or near an end of the swing arm.

Particularly preferably, the swivel arm is guided by a mechanical forced operation. In particular, a cam guide is used as a mechanical positive guide on which the swivel arm rests or rests on the swivel arm. It is also preferred if the swivel arm is guided by a lever guide or a link guide. In these cases, the articulated pivot arm is forcibly guided during the pivoting movement. The swivel arm can be guided on a mechanical curve guide.

The mechanical cam guide may have at least one approximately circular segment-shaped around the pivot axis extending cam. This offers considerable advantages, as between the force-transmitting elements shear stresses are better avoided, which increases the durability.

Preferably, the support device is held by a holder which is articulated to the pivot arm. By a pivotally mounted on the pivot arm holder can be achieved independent of the movement of the pivot arm movement of the support means.

In a preferred embodiment, when a bag is removed, the support device is in a tilted position, through which the bag to be thrown off is thrown off in a preferred direction, in order to achieve a firm association of the removal position and the removal angle.

In a preferred development of the invention, the holder which is held in an articulated manner on the articulated arm is guided over a further mechanical positive guide in order to ensure the tilting position of the support device in the removal position. Due to the additional mechanical forced operation, a greater flexibility in the movement sequence is achieved, since independent motion sequences are possible by the first and the second mechanical forced operation. It is preferred that the second mechanical forced guidance is designed as a curve guide or as a sliding guide.

In an alternative embodiment, the articulated holder is held by a piston-cylinder unit or another tipped when the bag to be removed is in the removal position. It is also possible, for example, to use an actuator for tilting, which in particular comprises at least one electric, hydraulic or pneumatic actuator unit.

If the further mechanical positive guide is used to control the bag removal, then the support means is preferably kept in an embodiment approximately horizontally aligned during the pivoting movement of the rest position into the removal position until shortly before the tilted position. For this purpose, the further mechanical positive guide is preferably shaped such that it is a possible inclination of the support means, which is caused by the course of the first mechanical positive guidance, balanced.

According to a preferred embodiment, the further mechanical forced operation causes a tilting movement of the support device shortly before the removal position, so that the bag supported thereon is thrown off.

In a particularly preferred embodiment, for example, a mechanical positive guidance is used to guide the bag removal device, as described above, while a control means is used in particular in the form of a control rod for controlling the decrease. The mechanical forced operation causes a lifting of the support device during the pivoting movement in order to approximate the support device to the sack bottom and subsequently to support the sack from below, so that the friction torque between the sack valve and the filling tube is reduced. A so-called breakaway torque is thereby overcome and the sack can be more easily removed from the nozzle or deported.

On the pivoting path to the removal position, the support device is further influenced by the control rod, the order a pivot axis spaced from the axis of rotation of the pivot arm pivotally mounted and hingedly connected at the other end to the support means.

In this case, the control rod is connected to the support means such that during the pivoting movement of the pivot arm, the support device is tilted slowly forward, in such a way that the support means is tilted about the first part of the way approximately horizontally and on the second part of the way forward, to effect a defined decrease of the filled bag onto the discharge belt in the take-off position.

The exact sequence of movements of the support device results from the position of the pivot axis of the pivot arm and the position of the pivot axis of the control rod, as well as by the height offset between the articulation point of the pivot arm on the support means and the point of articulation of the control rod on the support means. In this case, the point of articulation of the control rod on the support device is arranged higher than the pivot axis for the tilting movement of the support device.

It is thereby achieved that on the pivoting path to the removal position, the length of the control rod causes the support means is tilted forward.

With such a configuration, a sliding movement and gentle treatment of the bag is achieved. The gentle approach and the slow controlled tilting of the bag avoids larger pressure surges on the bag, which means that less requirements can be placed on the stability of the bag material.

In preferred developments, the support means is height adjustable to the bag removal device to different Bag types, such as sacks of 25 kg or 50 kg weight.

In advantageous developments, a drive device for the filling machine and a drive unit for the bag removal device are provided. In this case, the drive device and the drive unit can be coupled, in particular coupled via a control device, in order to adapt the sequence of movement of the filling machine and the bag removal device to one another.

In preferred developments, in addition to the first bag take-off device, a second bag take-off device may also be provided, which may be e.g. is provided at a different angular position to remove defective bags early from the corresponding filling tube.

The bag removal device according to the invention is provided for a filling machine for filling sacks, in particular for filling valve bags, and comprises a support device for removing the filled sacks from the filling tubes of the filling machine. The support means performs a reciprocating movement for detaching a bag, at least the outward movement comprising a circumferentially and radially aligned movement, or a circumferential and radial movement, to move by means of the support means in the outward movement from a rest position at least one removal position to remove a filled bag from a filling tube.

In particular, the forward movement comprises a component directed away from the central axis of rotation of the filling machine and a component in the circumferential direction in order to operate the blind valve and the filling tube at approximately the same peripheral speed during the removal. In a purely radial movement as in the prior art, however, it may cause adverse effects on the bag valve come because the filling tube continues to rotate during acceptance with the packing machine. A coordinated or even combined movement in the radial direction and in the circumferential direction, in which the peripheral speed of the support device in the circumferential direction of the packing machine and the peripheral speed of a filling tube are approximately equal leads to some significantly lower load on the bag valve and thus to reduced waste with the same bag and bag valve material ,

The coordinated movement can be a combined movement. It is also possible to generate a resulting movement in the radial direction and in the circumferential direction by means of two separate movements, which are coordinated with one another.

Preferably, the support means is arranged on a pivot arm, which is arranged pivotable about a substantially vertically arranged pivot axis, to remove during the pivoting movement by means of the support means a filled bag from a filling tube.

In all cases, the bag removal device or bag discharge device is preferably controllable.

The bag removal device preferably has at least one location or angle sensor. An angle sensor may be implemented as an absolute rotary encoder and, e.g. be provided on a transmission of the drive motor, so that at any time the position of the support means of the bag removal device is known. The exact knowledge of the position is e.g. advantageous to perform acceleration or braking operations targeted and reproducible.

Furthermore, the bag take-off device is suitable and intended in all the previously described embodiments, which are used by at least two different filling tubes filled bags sack one after the other. For this purpose, for example, a sack of a first filling tube and then a sack of a second filling tube can be thrown off first, so that the sacks filled by several or all of the filling tubes can be successively pushed off or thrown off by means of a sack removal device.

Preferably, the bag removal device is provided for a rotatable around a central axis of rotation and equipped with a plurality of filling tubes filling machine, but can also be used in a single filling machine with only one filling tube.

The bag removal device as a whole is in particular not movable, but arranged stationary or stationary. The bag removal device may be arranged substantially next to the filling machine, but may also be provided partially or completely below the rotating part of the filling machine. In all cases, the bag removal device is in particular in operative connection with the filling machine.

A height adjustment of the bag removal device can be automatically controlled at the touch of a button or done by hand, the drive can be performed by an electric motor, pneumatic or hydraulic.

With the system according to the invention pourable or flowable materials such as u.a. Building materials, cements, minerals, chemicals in powder form or as granules, as well as crystalline, fine or coarse-grained and powdery substances and food stuffed or packed.

Further features, properties and advantages of the present invention will become apparent from the following description of Embodiments with reference to the accompanying drawings.

Show:

Fig. 1 is a side view of an embodiment of a filling system according to the invention;

Fig. 2 is a partially cutaway plan view of the filling plant of Fig. 1;

Fig. 3 is a schematic and perspective view of the bag removal device of Fig. 2;

Fig. 4 is a side view of the bag removal device of Fig. 3;

Fig. 5 is a plan view of the bag removal device of Fig. 3;

FIG. 6 shows a view of the mechanical positive guide of the bag removal device according to FIG. 3; FIG.

FIG. 7 shows the lifting curve of the bag removal device according to FIG. 3; FIG.

Fig. 8 is a detail view with the other mechanical

Forced operation of the bag removal device according to Fig. 3;

FIG. 9 shows the decrease curve of the bag removal device according to FIG. 3; FIG.

10 shows a schematic and perspective view of a further bag removal device according to the invention; FIG. 11 shows a schematic side view of the bag removal device according to FIG. 10; FIG.

FIG. 12 shows a schematic plan view of the bag removal device according to FIG. 10; FIG.

13 shows a schematic side view of a further bag removal device according to the invention;

Fig. 14 is an oblique schematic side view of the bag take-off device of Fig. 13;

FIG. 15 shows a schematic plan view of the bag removal device according to FIG. 13; FIG. and

16 shows a very schematic view of a further bag removal device according to the invention.

With reference to the figures, an embodiment of a filling system 1 according to the invention will now be described. The filling system 1 according to the invention comprises a rotating filling machine 2 and the separate bag removal device 3, which removes filled bags from the filler neck. The filling plant 1 serves in the exemplary embodiment for filling pourable goods, in particular for filling building materials, such as e.g. Cement.

In Fig. 1, the filling system 1 is shown in a side view and in Fig. 2 in a partially cut away plan view to allow the view of the partially disposed therebelow Sackabnahmeeinrichtung 3. The central filling machine housing 9 is designed here in cross section sixteen-cornered. The cross section may also be round or have a different number of corners.

The filling machine 2 can be equipped in this embodiment with up to eight filling modules 4, wherein each filling module 4 comprises a filling tube 12. In the illustration according to FIG. 2, only one filling tube 12 is shown schematically, while in FIG. 1 two are visible from the side and two are schematically visible from the front. The filling tube 12 are distributed over the circumference of the filling machine 2, each arranged at an angle of 45 ° to each other.

Each filling module includes i.a. its own filling pot, its own filling pipe 12, as well as an associated weighing system, etc. Although the illustrated filling machine 2 can accommodate up to eight filling modules 4, less filling modules can be installed so that if necessary filling modules can be retrofitted. The flexible design of the filling system allows cost-effective and uncomplicated expansion of the filling machine up to the intended maximum expansion.

In other embodiments, a different number of filling tubes can be provided. The number of filling tubes or filling nozzles depends on the required power, so that the rotor which can be driven in rotation about a vertical axis can also be provided with an arbitrary number of filling tubes. For example, For example, the filling machine may be two, three, four, five, six, seven, eight, nine, ten, eleven, twelve, fourteen, or more, such as e.g. have sixteen filling tubes and associated filling units.

An unillustrated slip-on machine can supply the filling machine 2 with the required bags and attach the bags independently on the filling tubes 12. A (not shown) sensor Before starting the filling process, it checks whether a bag is properly seated on the filling tube before the control unit 24 starts the respective filling process. The sensor can be designed as a push button sensor or as a contactless sensor.

The rotary machine advantageously has a drive 31 with soft start via a V-belt 33, optionally also via a toothed belt.

For precisely defined filling an annular gap ventilation can be provided to reduce the wall friction between the filling pipe and product.

During filling, the weight of the system to be weighed is checked continuously or quasi-continuously by the control unit 24 for each sack, the sack weight being determined dynamically from the measured weight by subtracting the system weight. For each of two filling tubes 12, a control unit 24 is provided. With the supply unit 8, the control units 24 and the other electrical components are supplied with energy.

The filling process is controlled as a function of the filling weight actually achieved, so that when the target weight approaching, the filling speed is reduced at least as of a predetermined threshold value.

For controlling the filling speed of the visible in Fig. 1 slider 18 may have a pneumatic drive. By moving the slide, for example via a piston-cylinder unit, the slide is placed in the position for the coarse dosing and in a position for the fine dosing or in several different positions for the fine dosing, as well as in the closed position. This can eg a three- or multi-position cylinder may be provided. Also, a hydraulic, electrical, magnetic drive of the slider or a scissor valve device is possible. To avoid dust, a backfill guide or a backwash deflector can be provided.

In preferred embodiments, the control units 24 have a function of sack breaking detection. This can e.g. take place, in which the actual course of the bag weight with known, e.g. previous, weight gradients is compared. Too large deviations downwards this indicates a defective bag or a blockage of the filling tube. By evaluating further data, the respective source of interference can be determined.

On the free end region of the filling tube 12 a filled valve bag 13 is plugged in Fig. 1 (shown in phantom). The bag hangs freely on the filling tube, without being supported otherwise. The filling tube carries the entire bag weight. A bag chair per filling tube, which must be weighed during the weighing and its weight must be deducted, is not necessary. This saves considerable costs.

When a bag 13 is filled and the corresponding filling tube 12 with the bag 13 hanging therefrom approaches that of the bag removal device 3, the pulse generator 32 triggers a signal and the bag removal device 3 is activated. The determination of the bag acceptance point can be speed dependent.

Shortly before the bag 13 comes to the angular position of the bag removal device 3, which is pivotable about the vertically arranged pivot axis 7 acceptance unit is activated and moves from the rest position shown in solid in Figure 5 15 in Figure 5 shown in phantom in the removal position 16. Dabei the filled bag is taken over by the rotating filling machine and transferred into the removal position associated with a conveyor belt or discharge belt 42 for the removal of the filled bags.

With the bag removal device 3 of the filling system 1, the bags are removed individually in a particularly gentle manner and stored in a well-defined manner on the discharge belt 42. Due to the pivoting movement of the bag removal device and the gentle tilting movement of the support device, a gentle bag removal is realized so that the impact forces acting on the bag 13 are considerably lower than in the prior art. This also leads to a more accurate adherence to the bag weight, since the gentle impact on the discharge significantly less filler material from the usually unclosed valve of the bag 13 exits again.

For the movement of the bag removal device 3 provides a drive 30, which acts via a drive or connecting rod 28 or the like on the pivot arm 14 of the bag removal device 3. The drive 30 may also be designed as a piston-cylinder unit or the like.

In FIGS. 3, 4 and 5, the bag removal device 3 is shown individually enlarged and in FIGS. 6 to 9 individual details are shown.

FIG. 3 shows a perspective view of the bag removal device 3, including the base frame 27, which is mounted on feet 26. On the housing frame 27, the pivot arm 14 about a vertical pivot axis 7 between the rest position 15 and the removal position 16 is pivotable. The pivoting takes place about the vertical pivot axis 7, so that the movement of the pivot arm is substantially parallel to the ground. A significant advantage of the pivoting movement of the pivoting arm is that the filled bag is transferred from the rotating movement of the packaging machine in the linear direction of movement, while in the prior art has often come to a skew of the bags on the discharge conveyor.

However, the movement of the swivel arm is not completely parallel to the ground, since the swivel arm is guided in the mechanical positive guide 19 and thereby lifted. The mechanical positive guide 19 is designed here as a sliding guide and shown enlarged in Figures 6 and 7. It can be seen that the swivel arm in the lifting curve 20 (see Fig. 7) is guided obliquely upward along a rising slope 20a on the way from the rest position 15 to the removal position 16. As a result, the support device 10 of the bag removal device 3 is raised so that the support device with the support unit 6 or the saddle of the support device 10 touches the filled bag 13 from below, subsequently supports it and optionally raises it slightly to reduce the friction between the filling tube and bag during removal ,

About the bracket 23, the support means 10 is pivotally connected to the pivot arm 14. As a result, an independent movement of the pivot arm 14 and the support device 10 is made possible. The support device 10 is controlled in a further mechanical positive guide 21 by means of a decrease curve 22. The lifting curve 20 and the take-off curve 22 are aligned with each other and adapted in their respective position that when lifting the support means 10, the support unit 6 or the saddle of the support device 10 initially remains aligned horizontally, in which at the beginning of the decrease curve 22 also a corresponding Increase is provided on a rising slope 22a. This is followed by a horizontal region 22b. Shortly before the swivel arm reaches the removal position 16, an obliquely downward-pointing region in the form of a falling bevel 22c is provided in the take-off curve 22. As a result, the holding device 23 and the support device 10 are tilted at an angle, as a result of which the sliding unit 5 pushes the sack 13 away from the filling tube 12 and, on the other hand, the sack resting on the support unit 6 is thrown off at the defined angle.

The bag removal device 3 used here has substantial advantages, since the bag 13 can be raised and pushed off by means of the mechanical positive guide 19 via a simple horizontal pivoting movement about a vertical pivot axis 7 and on the other hand can also be applied out of the area of the rotating filler neck 12 Swing arm 14 pivots out of the region of the rotating filling tubes 12.

The coordination of the course of movement of the bag removal device 3 and rotating filling machine 2 takes place via the control device 40.

The support device 10 is arranged with the holder 23 at the outer end 17 of the pivot arm. The motor 30 for driving the bag removal device 3 is connected via a drive rod 28 in the form of, for example, a connecting rod or the like with the pivot arm 14 from the side.

After the bag has been taken off, the removal unit pivots back into the starting position, namely the rest position 15. There, the removal unit remains until the next filled bag 13 is to be removed.

Following the bag removal, a checkweigher can be installed, which again weighs the filled bags, to emit a signal on bags with incorrect weight and to sort out the bags if necessary.

In order to allow adaptation to different bag shapes and bag lengths, the bag removal device 3 is designed to be height adjustable. For height adjustment, the support device is adjusted.

For easy operation, a variety memory can be provided, in which the optimal settings for different products are stored. By means of e.g. a direct dialing can be used to select a product and set the system as a whole. Overall, the system can be network-capable and forward the recorded data online.

The filling module 4 forms a compact unit, so that overall the entire filling machine can be made compact. Among other things, this is due to the fact that no bag chair is integrated, whereby the height of the unit is considerably smaller than in known assemblies that include the filling tube and the respective bag chair. The weight of the weighing system is therefore also considerably smaller.

A further embodiment of a bag removal device 3 is shown in FIGS. 10 to 12, which can likewise be used on the filling system 1 from FIG. While a schematic perspective view of the bag removal device 3 is shown in FIG. 10, FIG. 11 shows a side view and FIG. 12 a plan view of the bag removal device 3. The bag removal device 3 is located in an intermediate position 58 between FIGS Rest position 15 and the Abnahmebzw. Acceptance position 16. The basic structure of the bag removal device according to FIGS. 10 to 12 corresponds to the construction of the bag removal device 3 from FIGS. 3 to 9. Thus, the bag removal device 3 according to the exemplary embodiment according to FIGS. 10 to 12 has a frame or a base frame 27 which is arranged on feet 26. The pivot arm 14 is pivotally controlled between a rest position 15 and a take-off position 16 by means of a drive rod 28 via a motor 30. The position of the rest position 15 and the removal position 16 coincide with those of the previous embodiment.

When pivoting from the rest position 15 into the removal position 16, the support device 10 is raised due to the mechanical positive guide 19, which here has the lifting curve 20 shown in Figure 7, so that the support unit 6 of the support device 10 approaches from below to the sack bottom and supports the still hanging on the filling tube 12 bag from below, so that the friction between the filling tube and the bag valve of the bag is reduced in the upcoming bag decrease.

In the embodiment of FIGS. 10-12, the bag removal device 3 does not have a further mechanical positive guide 21, but via a control rod 52 which at one end by means of a hinge 53 on a support rod 51 and at the other end to the support unit 10 by means a hinge 54 is hinged, so that a hinged but rigid connection between the support rod 51 and the support unit 6 of the support device 10 is made.

The control rod 52 has an angle of inclination 56 to the horizontal 57, such that the control rod 52 rises from the articulation point on the support rod 51 to the articulation point on the support unit 6. The angle 56 is here in the exemplary embodiment. play in the rest position 15 about 5 degrees, but can also be larger or smaller.

The articulation point 54 of the control rod 52 on the support means is arranged in particular higher than the hinge point 41 of the support means, so that the support means 10 is pivoted by pressing the control rod to the front, whereby the bag is pushed away from the filling tube 12 and placed on the discharge belt 42.

The function of the bag take-off device according to FIGS. 10 to 12 is as follows:

When the pivoting arm 14 is pivoted on the one hand, the supporting device 10 or the joint 41 is pivoted about the pivot axis 7, on the other hand the positively controlled pivoting of the articulation point 54 of the control rod 52 on the support device 10 takes place at the same time around the pivot joint 53 of the support rod 51.

By pivoting the pivot arm 14 in the direction of the support arm 51, the distance between the hinge 41 and the pivot joint 53 of the support rod 51 is reduced. Since the length of the control rod 52 is constant and since the control rod at the hinge 41 arranged above the joint 54 at the support means 10 is fixed, the support means 10 is pivoted about the hinge 41 slowly forward and performs a tilting movement, with which the bag is dropped.

For precise adjustment of the movement, the position of the control rod 52 and the joint 53 in a region 55 is adjustable.

Overall, with the bag removal device 3 according to the first or the second exemplary embodiment, a particularly gentle reduction is achieved. achieved sacks of the filling tubes, which bursting bags when dropped can be substantially avoided.

A further advantage is that a cover 43 can be provided on the discharge belt 42, within which it can be specifically suctioned off in order to selectively suck off any material still emerging when the sacks 13 strike the discharge belt 42. Overall, this leads to a clean machine and a clean environment.

The bag removal device according to FIGS. 10-12 has an advantageous adjustment possibility, since the length of the control rod 52, which is comparable to the length of the pivot arm 14, allows a more sensitive adjustment of the coordinated lifting and tilting movement with two directly arranged slide guides ,

Alternatively, in the embodiment according to FIGS. 3 to 9, the two slotted guides could be spatially separated from one another, in order to be able to coordinate the coordination of the two movements to one another more finely in this exemplary embodiment as well.

In the figures 13 to 15, a further embodiment is shown, are provided in the same or similar parts again with the same reference numerals.

The bag removal device 3 is here also designed to be pivotable about an approximately vertical pivot axis 7. The support device 10 is guided via a pivot arm 14 by a mechanical positive guide 19, which is designed here as a curved guide. For this purpose, the pivot arm 14 is guided on the curve 20 of the mechanical positive guide 19. An upper limit of the guide does not exist here in the exemplary embodiment. Gravity loaded the support device 10 on the curve 20 of the mechanical positive guide 19 in front, so that a constant contact between the pivot arm 14 and curve 20 is present.

In contrast to the previous embodiment, the pivot arm 14 is mounted significantly lower here to reduce the mechanical forces between the positive guide 19 and the pivot arm 14.

Therefore, the curve 20 shown in FIG. 15 in a plan view is designed in the form of a circular segment 91a in order to reduce the relative movement between positive guide 19 and pivot arm 14 during the pivoting movement.

To increase the load capacity, the joints 53 and 54 and the hinge on the pivot axis 7 are made robust to withstand the stresses in dusty environments.

The support means is here provided height adjustable insofar as the saddle 6 of the support means 10 is designed to be height adjustable, while the sliding unit 5 is not adjustable in height. The adjustability can be provided manually, but can also be done electrically, pneumatically or hydraulically.

Here, the bag removal device 3 is preferably arranged centrically to the packaging machine, the positioning unit serving as the centering unit 59, which is guided to the central axis of the packaging machine in order to position the bag removal device 3.

In all embodiments, location sensors and / or angle sensors may be provided in order to be able to control the bag removal device 3 as a function of the determined data.

In the exemplary embodiment shown only schematically in FIG. 16, the bag removal device 3 is in a radial view illustrated, wherein the packing machine (not shown) is arranged behind the bag removal device 3. Here, the swinging movement for removing a bag around the pivot point 61 is performed. The pivot axis is thus practically horizontal. During the pivoting movement from the rest position 15 into the removal position 16, the support device 10 is raised, supports the bag, releases it from the filling tube 12 and deposits the bag.

Reference numerals:

1 full line 22c falling slope

2 filling machine 23 bracket

3 bag removal device 24 control unit

4 filling module 26 feet

5 sliding unit 27 base frame

6 Support unit 28 Drive rod

7 swivel axis 30 motor of the bag take-off

8 Supply unit device

9 Filling machine housing 31 Filling machine motor

10 support device 32 pulse generator

11 Rotary axis 33 V-belt

12 filling tube 40 control device

13 sack 41 joint

14 swivel arm 42 discharge conveyor

15 rest position 43 paneling

16 Pickup position 51 Support bar

17 outer end 52 control rod

18 slides 53 joint

19 mechanical forced 54 joint guide 55 setting range

19a angle segment 56 angle

20 lifting curve 57 horizontal

20a rising slope 58 intermediate position

21 more mechanical 59 centering unit

Forced operation 60 Stiffening profile

22 Take-off curve 61 Pivot point

22a rising slope

22b horizontal area

Claims

Claims :

1. Filling plant (1) with a filling machine (2) and a separate bag removal device (3), wherein the filling machine (2) as a rotary filling machine (2) about a central axis of rotation (11) rotatably arranged and with a plurality of filling tubes (12) for filling sacks (13), in particular for filling valve sacks, characterized in that the sack removal device (3) provided for removing the filled sacks (13) comprises a support device (10) suitable for removing a sack ( 13) performs a reciprocating motion, wherein at least the outward movement comprises a circumferentially and radially matched movement, by means of the support means (10) in the return movement from a rest position to at least one removal position, a filled bag (13) of a filling tube (12) decrease.

2. filling system (1) according to claim 1, wherein the support means (10) for removing the filled bags (13) provided Sackabnahmeeinrichtung (3) on a pivot arm (14) is provided which is pivotable about a pivot axis (7), to effect the directional reciprocation of the support means (10) during the pivotal movement.

3. filling system (1) according to claim 1 or 2, wherein at least a part of the support means (10) is raised in the directed movement of the rest position (15) in the removal position (16).

4. filling system (1) according to claim 1, 2 or 3, wherein the support means (10) in the rest position (15) at least partially radially offset from the filling tubes (12).

5. filling system (1) according to at least one of the preceding claims, wherein the pivot arm (14) by a mechanical positive guide (19) is guided.

6. filling system (1) according to the preceding claim, wherein the pivot arm (14) is guided on a mechanical cam guide (19).

7. filling system (1) according to the preceding claim, wherein the mechanical cam guide (19) has at least one approximately circular segment-shaped around the pivot axis extending cam.

8. filling system (1) according to at least one of the preceding claims, wherein the support means (10) by a holding tion (23) is held, which is articulated to the pivot arm (14).

9. filling system (1) according to at least one of the preceding claims, wherein the support means (10) in the removal position (16) is in a tilted position.

10. filling system (1) according to at least the preceding claim, wherein the articulated holder (23) via a further mechanical positive guide (21) is guided to ensure the tilting position of the support means (10) in the removal position (16).

11. Filling installation (1) according to claim 10, wherein the articulated holder (23) is tilted via an actuator, which in particular special comprises at least one electric, hydraulic or pneumatic actuator unit.

12. Filler assembly according to at least one of the preceding claims, wherein a control rod (52) is provided, which provides a substantially rigid connection between a hinge (54) on the support means and a fixed joint (53) to a tilting movement of the support means

(10) to cause the pivotal movement about the pivot arm.

13. Filling plant according to the preceding claim, wherein the joint (54) of the control rod (52) above the hinge (41) of the support means (10) is arranged.

14. Filling plant (1) according to at least one of the preceding claims, wherein at least part of the support means (10) is height adjustable.

15. Filling plant (1) according to at least one of the preceding claims, characterized in that a drive device (31) for the filling machine (2) and a drive unit (30) for the bag removal device (3) is provided, wherein the drive means (31) and the drive unit

(30) are coupled via a control device (24) controllable.

16. Filling plant (1) according to at least one of the preceding claims, characterized in that at least two bag removal devices (3) are provided.

17. A bag removal device for a filling machine (2) for filling bags (13), in particular for filling valve bags, which comprises a support device (10) for removing a filled bag (13) from a filling tube (12), characterized in that the support means (10) for removing a bag (13) performs a reciprocating motion, wherein at least the outward movement comprises a circumferentially and radially matched motion to, in the outward movement from a rest position into at least one acceptance position means the support device (10) to remove a filled bag (13) from a filling tube (12).

18. Sackabnahmeeinrichtung according to the preceding claim, wherein the support means (10) on a pivot arm (14) is arranged, which is arranged pivotably about a substantially vertically arranged pivot axis (7) to the direction of movement of the support means (10) during the pivoting movement. to effect and to remove the filled bag (13).

19. Sackabnahmeeinrichtung according to one of the two preceding claims, wherein at least one location or angle sensor is provided which is designed in particular as Absolutdrehwinkelgeber to control the movement of the removal.